Barnwell County, SC Population

Overview

20,801

Total Population

41.3

Median age

51.27%

Female population %

95.1:100

Gender ratio (M:F)

15-19 years

Largest age group

60.5

Total dependency ratio

White

Largest racial group

553

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

Barnwell County's population is old compared to the rest of the country:

The median age in Barnwell County is 41.3, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Barnwell County's population under 18 was 23.86%, compared to the 22.51% nationwide.
Barnwell County's elderly or the senior population (over 65 age) was 18.42% as compared to 16.04% nationwide.
Of the total population in Barnwell County, 19.27% were under the age of 15, 19.15% aged 15 to 29, 43.16% aged 30 to 64, 16.16% aged 65 to 84, and 2.25% were 85 years of age and older.

There are 527 more females than males in Barnwell County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 51.27% females and 48.73% males in Barnwell County, SC.
The Barnwell County, SC gender ratio is 95.1:100 i.e. 95.1 men to 100 women (0.951).
For male population, the largest age group is 0-4 years with a population of 800.
For the female population, the largest age group is 15-19 years with a population of 916.

Barnwell County's population has become increasingly diverse:

Racial distribution of Barnwell County population: 51.43% are White, 46.61% are Black or African American, 0.07% are American Indian and Alaska Native, 0.09% are Asian, 1.15% are some other race and 0.65% are multiracial.
Barnwell County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 553 is Hispanic or Latino (of any race), and 20,248 (97.34% of the total population) is Non-Hispanic.
The largest racial group in Barnwell County is White with a population of 10,697 (51.43% of the total population).

Barnwell County's population has already reached its peak and is showing a trend of decline:

The peak population was 23,487 in the year 2000
From 2000 to 2010, Barnwell County's population decreased by 848 (3.61%), as compared to the national growth of 9.63%.
From 2010 to 2020, Barnwell County's population decreased by 2,059 (9.09%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
Between the year 2000 and 2022, Barnwell County's population was lowest in year 2022 at 20,414.